/u/Kleptarian's posts in /r/askscience

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What’s the difference between vaccine and antidote?

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If all human life on earth ended tomorrow, causing the complete and permanent extinction of human beings, and assuming no other species began replicating our technology, how long would it take for any detectable (by today’s standards) evidence of humanity to completely disappear?

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Is it possible, from a far away enough distance, that from the point of view of an observer, the entire formation and future collapse of our universe would appear as a couple of seconds in their time? The way we see a match flicker and then go out.

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What sort of life forms might exist at the bottom of the deepest oceans which we haven’t encountered yet?

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If something wiped out human life on earth, but all (or most) other life on earth remained, could another species theoretically evolve to human-level intelligence over millions of generations?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
What’s the difference between vaccine and antidote?	1
If all human life on earth ended tomorrow, causing the complete and permanent extinction of human beings, and assuming no other species began replicating our technology, how long would it take for any detectable (by today’s standards) evidence of humanity to completely disappear?	1
Is it possible, from a far away enough distance, that from the point of view of an observer, the entire formation and future collapse of our universe would appear as a couple of seconds in their time? The way we see a match flicker and then go out.	1
What sort of life forms might exist at the bottom of the deepest oceans which we haven’t encountered yet?	1
If something wiped out human life on earth, but all (or most) other life on earth remained, could another species theoretically evolve to human-level intelligence over millions of generations?	1